This indicates an attack attempt to exploit a Policy Bypass vulnerability in Secutech RiS-11, RiS-22, and RiS-33 devices.
The vulnerability is due to insufficient sanitizing of user supplied inputs in the application when handling a crafted HTTP request. A remote attacker may be able to exploit this to change the device's DNS server setting, via a crafted request to the vulnerable service.
Secutech RiS-11, RiS-22, and RiS-33 devices with firmware V5.07.52_es_FRI01
System Compromise: Remote attackers can redirect traffic to malicious servers.
Currently we are unaware any vendor supplied patch for this issue.